1997 Population for IL
 
 FIPS Population Households Area(SqKm)
17001     67851     25515    2256.721 IL Adams County
17003     10029      4234     654.110 IL Alexander County
17005     17070      5652     991.120 IL Bond County
17007     37922     10950     730.278 IL Boone County
17009      6345      1991     795.809 IL Brown County
17011     35606     13790    2261.999 IL Bureau County
17013      4960      2048     734.798 IL Calhoun County
17015     16941      6638    1206.438 IL Carroll County
17017     13223      5195     993.935 IL Cass County
17019    168473     63900    2583.689 IL Champaign County
17021     34608     13591    1853.692 IL Christian County
17023     17572      6394    1307.726 IL Clark County
17025     14450      5708    1216.961 IL Clay County
17027     35367     11583    1304.076 IL Clinton County
17029     51312     18957    1321.153 IL Coles County
17031   5076786   1879488    2488.543 IL Cook County
17033     21070      7792    1154.539 IL Crawford County
17035     11172      4029     898.777 IL Cumberland County
17037     83602     26413    1644.697 IL DeKalb County
17039     16781      6488    1049.406 IL De Witt County
17041     19782      7206    1081.176 IL Douglas County
17043    870378    279344     872.502 IL DuPage County
17045     19905      7859    1616.719 IL Edgar County
17047      7028      3016     576.711 IL Edwards County
17049     33280     11465    1243.023 IL Effingham County
17051     21604      7719    1878.771 IL Fayette County
17053     14049      5602    1259.867 IL Ford County
17055     40679     16564    1117.390 IL Franklin County
17057     38405     14893    2286.097 IL Fulton County
17059      6671      2784     850.607 IL Gallatin County
17061     15639      5910    1415.106 IL Greene County
17063     36253     11979    1114.844 IL Grundy County
17065      8621      3476    1128.890 IL Hamilton County
17067     21146      8409    2109.764 IL Hancock County
17069      4964      2049     470.196 IL Hardin County
17071      8637      3237    1023.440 IL Henderson County
17073     51453     19514    2138.410 IL Henry County
17075     31400     11788    2895.905 IL Iroquois County
17077     60698     23466    1560.584 IL Jackson County
17079     10559      3962    1289.966 IL Jasper County
17081     38966     14606    1511.882 IL Jefferson County
17083     21248      7344     976.559 IL Jersey County
17085     21678      8371    1602.666 IL Jo Daviess County
17087     13074      3725     903.613 IL Johnson County
17089    380801    107176    1357.463 IL Kane County
17091    101984     34623    1765.053 IL Kankakee County
17093     49856     13301     835.769 IL Kendall County
17095     55559     21909    1864.118 IL Knox County
17097    594799    173966    1218.159 IL Lake County
17099    109543     41284    2973.620 IL La Salle County
17101     15622      6320     968.570 IL Lawrence County
17103     35777     12475    1888.982 IL Lee County
17105     40316     13737    2707.829 IL Livingston County
17107     31317     11033    1603.308 IL Logan County
17109     34086     12255    1528.267 IL McDonough County
17111    236952     62940    1582.954 IL McHenry County
17113    140797     46796    3072.595 IL McLean County
17115    114265     45996    1516.194 IL Macon County
17117     49214     18176    2247.212 IL Macoupin County
17119    258641     94857    1917.599 IL Madison County
17121     42035     16272    1491.135 IL Marion County
17123     12858      4900    1032.204 IL Marshall County
17125     16885      6342    1459.231 IL Mason County
17127     15420      5908     627.114 IL Massac County
17129     12345      4199     816.880 IL Menard County
17131     17544      6572    1473.473 IL Mercer County
17133     25931      8189    1030.109 IL Monroe County
17135     30992     11480    1838.350 IL Montgomery County
17137     36056     13678    1482.237 IL Morgan County
17139     14433      5122     892.204 IL Moultrie County
17141     50199     17132    1977.034 IL Ogle County
17143    182657     70797    1634.066 IL Peoria County
17145     21368      8306    1157.312 IL Perry County
17147     16498      5934    1140.494 IL Piatt County
17149     17287      7016    2198.693 IL Pike County
17151      4681      1611     970.350 IL Pope County
17153      7209      2957     526.659 IL Pulaski County
17155      5854      2204     446.125 IL Putnam County
17157     34082     11949    1546.993 IL Randolph County
17159     16843      6503     937.667 IL Richland County
17161    148277     59317    1168.580 IL Rock Island County
17163    263866     95333    1745.624 IL St. Clair County
17165     26359     10839    1002.306 IL Saline County
17167    191597     72146    2271.719 IL Sangamon County
17169      7625      3002    1143.297 IL Schuyler County
17171      5591      2190     654.723 IL Scott County
17173     22593      8563    1989.347 IL Shelby County
17175      6344      2512     746.505 IL Stark County
17177     49354     18920    1462.785 IL Stephenson County
17179    128521     47171    1704.056 IL Tazewell County
17181     18037      6838    1093.357 IL Union County
17183     85097     34072    2336.636 IL Vermilion County
17185     12731      5032     589.943 IL Wabash County
17187     18777      7393    1406.911 IL Warren County
17189     15325      5658    1461.156 IL Washington County
17191     17011      6935    1853.407 IL Wayne County
17193     15647      6845    1299.449 IL White County
17195     68073     22740    1805.391 IL Whiteside County
17197    444469    116933    2200.069 IL Will County
17199     61163     23120    1150.984 IL Williamson County
17201    266653     96727    1345.068 IL Winnebago County
17203     34776     11395    1405.813 IL Woodford County
----- --------- --------- -----------
Total  11895849   4202240  145936.303